Accounting machine



Oct. 7, 1941. M. E. GOULD 2,258,204

ACCOUNTING MACHINE Filed March 12, 1940 3 Sheets-Sheet l @QQQQOQQQ Oct.7, 1941. ULD. 2,258,204,

ACCOUNTING MACHINE Filed March 12, 1940 3 Sheets-Sheet 2 Oct. 7, 1941.GQULD 2,258,204

ACCOUNTING MACHINE Filed March 12, 1940 3 SheerLs-Sheet 3 Patented Oct.7, 1941 UNITED STATES PATENT OFFICE" ACCOUNTING MACHINE Merle E. Gould,Greenwich, Coma, assignor to Photoelectric Business Machines, Inc., NewYork, N. Y., a corporation of Delaware Application March 12, 1940,Serial No. 323,499

3 Claims.

The present application constitutes a continu- I ation in part of myco-pending application Serial No. 173,727, filed November 9, 1937.

'In the present invention provision is made whereby the dataaccumulating mechanism is arranged for speedy operation, so that itisadapted for use in an accounting machine controlled by photographic filmrecords on which data are represented by photographic spots, which spotsdesignate the value of the recorded data by their positions on the filmrecords. The spots are analyzed by light rays which activate photocellsdisposed in predetermined coded positions, corresponding to thepositions of the coded designations on the records, to control the entrycontrol means of the data accumulating mechanism. In the electrically.controlled accounting machines, generally the practice is to operate thedata accumulating mechanism in timed relationship with the movement ofthe records to effect differential displacements of the accumulating oradding elements.- This principle of operation is not readily applicablto control remotely situated accumulating mechanisms. Therefore, furtherprovision is made in the present invention whereby the operation of theaccumulating mechanism is independent of the operating mechanism forfeeding the records, consequently rendering it applicable for beingcontrolled at remote locations by the record sens ing means.

It is well recognized that photographic films of this sort customarilytravel at high speed; therefore in any machine which involves the rapidentry of successive value amounts, the time factor of taking care of thecarry-over operations from one adding wheel to the wheel of the nexthigher order, becomes important.

The tens carry operations in the usual accumulating mechanisms areefiected directly after each item entry, so that considerable time isconsumed, in addition to the normal entr'y time,

to allow the carry operations, made necessary 55 by each item entry, tooccur. This tens carrying time is reduced in the present invention bystoring and counting the carry operations as they occur, but enteringthem into the proper denominational orders of the accumulating mechanismonly after all items pertaining to a particular run, or operation of themachine, have been entered. The items can thus be entered as fast as theaccumulating mechanism is capable of operating, no active machine timebetween successive item entries being necessary to allow for tens carryoperations.

The arrangement of the accumulating mechanism for this delayed tenscarry operation consists of an accumulator element for eachdenominational order, but with no mechanism for effecting tenscarryoperations directly from each element to the element of the nexthigher order.

, Each denominational order element has a carryover storage system,"each comprising a settable switching means, associated therewith, oneof which receivesa step of movement every time the associatedaccumulator element passes from 9 to 0." Each storing device, higher ina series, receives a step of movement every time the next lower devicein the series passes from 9 to 0. These series of storing devices,therefore, count and store any number of tens carry operations,separately, for each denominational order. At the end of the machinerim, or when the desired number of items have been entered, the seriesof storing devices are read out and the stored carry units entered intothe proper accumulator elements.

Other objects of the invention will be pointed out in the followingdescription and claims and illustrated in theaccompanying drawings,which disclose, by way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. 1 is an enlarged view of a fragmentary section of the photographiccontrol element.

Fig. 2 is a diagrammatic view of the film'feeding and sensing means.

Fig. 3 is a perspective view showing'in simpli-' fled form severalorders of the data accumulating mechanism.

Fig. 4 is a circuit diagram showing the wiring connections of themachine.

I Photographic control record the usual feed apertures l6, andconsisting of individual areas or irames I I, which frames, whensuitably recorded with data designations, form the individual controlrecords.

In the use to which the invention has been by their relative positionson the individual records. In practice, and according to the embodimentshown, the data designations are shown on the record in an index pointrelationship, corresponding to the arrangement of the index perforationson the perforated cards of the well known Hollerith accounting system;that is, the difierential. positions of the spots [8 delineate theparticular values of the data represented thereby. The differentialpositions are represented by the dotted lines I! in Fig. l. Thediiferently positioned spots are formed in adjacent columns on therecords, which columnar positions are indicated by the dotted lines 20in Fig. 1. In this figure .it is noted, for example, that thedesignations, or spots l8 shown, represent the number 28.

Each individual record may be provided with spots in certain positionsother than the data index point positions, just referred to, forpurposes other than representing data.- For example, a controldesignation is shown in Fig. 1 to be represented by the spot 2| which isprovided in a position located below the zero index point position andbetween the described columnar positions. The purpose of this, andother, control designations which may appear on the records will beunderstood as 'the description progresses.

Record feeding means In Fig. 2, suitable feeding means for the film I5,is shown diagrammatically, and represented ventional projection machineis one in which the film is momentarily arrested opposite the lenssystem 24, while exposed, and in which the film is obscured by a shutteras the individual film frames are positioned successively to the lenssystem. Such projection machines are well known, and for this reason itis believed unnecessary to give further detailed description of thismechanism. For example, a suitable machine for use in conjunction withthe present invention is the standard. Bell 8: Howell film projectionmachine, the principles or operation of which are described in the U. 8.Patent #l,075,407.'

Record sensing meam Referring to Fig. 2, it is seen that in addition tothe light source-23, and lens system 24, the

record sensing means includes a plurality of light responsive, orphotoelectric means, such as the bank of photocells 21. The individualphotocells are arranged in a coded position corresponding to the codedarrangement of the spots I. on

the film records; that is.'the photocells are ar ranged in separatecolumns, or orderaeach column including as many photocells as there areindex point positions in each column of the individualfllmrecord.Inthepresentembodiment, ten photocells ar shown in each column tocorrespond to the ten index point positions for the data designationsformed on the records. and are numbered accordingly, namely 9 to O.

The banks of photocells are suitably disposed with respect to the lenssystem 24, of the projection machine, so that, as the film is beingpassed therethrough, at each exposure of a frame IT, a pattern of lightbeams, corresponding to the coded spots formed thereon, will beprojected upon the banks of photocells, whereby the photocells incertain coded positions will be activated by the beams, 0r rays, oflight passing through the coded spots. It is understood that the lightrays passing through the spots it, formed in certain coded positionswill activate those photocells disposed in the corresponding codedpositions in the banks of photocells. For example, the spots It, on theframe I1, in Fig. 1, represent the number "28 and, upon exposure ofsaidirame in the projector, the light rays passing therethrough arprojected upon the banks of photocells to activate those photocellsdisposed in the corresponding coded positions, namely 28" which areindicated by the darkened areas.

The position, or station, at which the film frames are arrestedmomentarily (opposite the lens system 24), will be referred to as thesensing station, or position. The circuits energized by the activatedphotocells will be described presently.

For the sake of simplicity, only several columns of photocells areshown. However. it is understood that-the number of columns ofphotocells provided should correspond to the number of columns of datadesignatiom provided on the film records. The photocells referred to, upto now, are those which are controlled by the data designationsappearing on the individual records.

It is to be noted that additional photocells 2| and 29 are provided, forcertain control purposes, which will be described later. It is onlynecessary to state, at this time, that the positions of the photocells2| and 29, in the bank, correspond to the coded positions where acontrol designation may appear on the film records. For example, thephotocell 22, is disposed in a coded position corresponding to the codedposition where the control designation 2| may appear on the filmrecords.

Data accumulating mechanism the said patent, there is shown the wellknown mechanism whereby, when a selected key is manually depressed, agear section (element Ill inl'ig.3ofthepatent)isrotated,throughapredetermined angle. to position aregister wheel for indicating the digital value oi the depressed key.sincethistypeormechanismisoldand well known, it is believed that thefollowing brief description of the accumulating mechanism will sumce,for those skilled in theart to understand the principles or operationemployed in the present invention.

Each denominational order of the accumulating mechanism is provided witha common operating shaft 30, and a gear sector 3|, which is secured tothe said shaft. A plurality of arms 3|a are fixed to and spaced on theshaft 30 in a spiral arrangement. A control solenoid 56 is associatedwith each arm 3|a, having a related plunger 56a adapted to engage acorresponding arm. The plungers 56a, for each order, are the same inlength, as shown in the figure, but, due to the spiral arrangement ofthe arms 3|a, with respect to the plungers 56a, the different arms arerotated through different angles, upon selective energization of therelated solenoids. The spirally arranged arms 3|a are disposed in thepaths of the strokes of the related plungers 5811, but are engaged atdifferent times during the strokes of the said plungers, due to the saidarrangement of the arms on shaft 30. The plungers 55a each have the samelimited extent of movement and the differential actuation of the shaft30 and sector 3| is determined by th extent of the lost motion before anoperative plunger engages and actuates its arm 3|a. For example, uponenergization of the 1 solenoid, the shaft 30 will be rotated one unit;and upon energization of the 2 solenoid, the shaft 30 will be rotatedtwo units, and so on.-

It is evident that, upon successive energization of the said solenoids,the gear sector 3| is rotated through different angles. in accordancewith the selective and successive energization of the control solenoids.Rotation of the gear sector causes the associated order Wheel 35 to bedisplaced, or rotated, through corresponding angles, for instance, uponenergization of the 1 solenoid, the shaft and sector 3| are rotated toadvance the wheel one unit or step, thus effecting the entry of 1; andupon energization of the ,2 solenoid, the said shaft and sector arerotated to advance the wheel two units or steps, thus effecting theentry of 2, etc.

The arrangement for effecting advancement of the wheel 35, which isrotatably mounted on shaft 33, comprises a ratchet wheel 36, secured toshaft 33, and a cooperating pawl 34, which pawl is pivotally mounted ona mutilated gear 31. The said gear 31 is pinned to the wheel 35, sothat, upon rotation of shaft 33,by means of the gearing 32, and sector3|, the ratchet wheel 35 is rotated to drive the gear 31 and wheel 35,through the said cooperating pawl. In this manner, entry of the itemsordata can be made in each denominational order of the accumulatingmechanism. Upon each item entry operation, the selected control solenoidis deenergized, permitting the sector 3|, shaft 30, and arms 3| a to berestored to the normal position, shown in Fig. 3, by the conventionalmeans, shown in the aforementioned patent. This conventional means isshown herein in Fig. 3 as the spring attached to the sector 3|.

It was mentioned that transferring of the tens carry, from the relatedorder to the next higher Gears 39 and 40 are also secured to shaft 48,the former being rotated a partial revolution by the tooth 38 of gear 31whenever the wheel 35 passes from 9 to 0. The ratio of gears 31 and 39,being such that each partial revolution of gear 39 comprises one-tenthof a revolution and is sufiicient to rotate the shaft 48 and advance theconducting arm 41 to engage the next adjacent contact 46 of the arcuatebank. Upon the completion of each half of a full revolution of gear 39,the gear 49 is arranged so that one of the teeth 4| engage the gear 42,secured to shaft 49,'to effect rotation of the gear 42 onetenth of arevolution, or one step. Gear 42, being secured to shaft 49, therebycauses the conducting arm 41 of storing device 44 to be advanced, toengage the next adjacent contact 46 of its arcuate bank. It is notedthat each contact of each device represents a digital value, which isindicated accordingly in Fig. 4. It will be noted that each one-halfrevolution of gear 39 and related conducting arm 41 is representative often stored carries and that during each one-half revolution, theconducting arm 41 sweeps across each of the contacts 46.

It should now be understood that each time successive item entries aremade, for example, in the units order, to cause the associatedaccumulator wheel 35 to pass from 9 to 0, indicating that a tens carryoperation should be made, from the units order to the tens order, anentryof one is made into the carry storing device 43; and that for eachtenth carry entry in the lower order storing device 43, an entry of oneis made into the next higher order storing device 44, and so on. In thismanner the tens carries are entered and stored in each of the storingdevices described. In order to simplify the description, only twostoring devices 43 and 44 are shown associated with the units order, andone storing device 45 is shown associated with the tens order of theaccumulating mechanism, said device 45 being identical in structure andoperation to the devices 43 and 44, just described.

Operation of the machine Referring now to Fig. 4, the operation of themachine will be described. It is to be understood from the descriptionthus far that the term data accumulating mechanism or means refers to aplurality of the denominational orders, each order comprising theelements just described, and the one or more carry storing and countingdevices, and associated control means, associated with each of the saidorders.

In the machine, illustrated in the figures, two orders of photocells,and three orders of the accumulating mechanism are shown, and tosimplify illustration of the invention, the machine is described ashaving a restricted data accumulating capacity, but it will be evidentthat the capacity of the machine may be enlarged to any desired capacityby employing additional orders of photocells and correspondingadditional orders in the accumulator, just described, and connected inthe machine similarly as the units shown in the present circuit diagramfor the machine.

Now, let it be assumed that the projection machine is set into operationto feed continuously the photographic film, but as mentioned before,presenting the film frames intermittently to the sensing position, wherethe coded designations, appearing on the individual records or frames,permit the rays of light to pass 1813- I control,

through, momentarily, to activate only the photocells which are disposedin the coded positions corresponding to the coded positions of the datadesignations. It is assumed that the speed of operation of theprojection machine is adjusted so that the individual film frames arepresented to the sensing station at a rate at which the dataaccumulating mechanism is capable of manifesting the sensed data. It isassumed, further, that the individual frame, or record, presentedmomentarily to the sensing station bears data designations, or spots,representing the number 28, thus causing the 2 cell of the tens orderand the 8 cell of the units order to be activated.

Due to the activation of the said cells, current is permitted to flow inthe following circuits: grounded battery 50, normally closed switch 5|,conductor 52, the "8 photocell of the units order, conductor 53, the 8solenoid 55 of the units order, conductor 51, switch 55 to ground 59,energizing said solenoid; the other circuit can be traced from groundedbattery 50, to the switch the conducting arm 55, of the sequence switch5i, conductor 52, the "2 cell of the tens order,

conductor 54, normally closed contacts 55, the 2 solenoid 55, conductor51, switch 55 to ground 59, energizing the said solenoid. Energizationof the said solenoids causes entries of 8 items to be made in theaccumulator wheel 35 of the units order, and "2 items in the wheel 35 ofthe tens order, in the manner as described hereinabove. It is seen,therefore, that during the record sensing operations, the saidphotocells of each .order are activated selectively, in accordance withthe data designations on the records to selectively, the energization ofthe related control solenoids of the corresponding order, therebycausing the sensed data to be entered into the accumulating mechanismaccordingly.

In order to simplify the showing of the circuit connections in thewiring diagram in Fig. 4, the conventional amplifiers have not beenshown connected in the individual photocell circuits. Since theconventional photocell controlled amplifiers are so well known, at thisdate, it is deemed sumcient to mention that the conventional type ofamplifier can be used in each photocell circuit for amplifying thecurrent flow directed to the related solenoids 55. In view of thisdisclosure, additional showing in the drawings is not deemed necessary,for those skilled in the art, to understand the principles of operationof the present invention.

Now, in order to describe briefly the method of reading out the storedcarries, assume that, at the end of a machine run, '166 items areentered in the units order of the main accumulator, and 12 items in thetens order. The true total of these items is 286; however, at the end ofthe said machine run, before reading out the stored carries, the wheel35 of the units order is standing at "5," the wheel 35 of the tens orderat and the wheel 35 of the hundreds order at0,"

- so that the main accumulator shows the uncompleted total, 026. Theconducting arms 41 of the carry-over storing devices 43 and 44 of theunits order are engaging the 6 and "1 contacts of the respective arcuatebank of contacts 45, and the conducting arm 41 of the device 45 of thetens order is engaging the 1" contact of the related contacts 45.

During the read out operations to be described, the normally closedcontacts 51 and switch 55 areopened. The=flrst step, in reading out thestored carries, comprises manually positioning 5|, to engage the contact52, thus establishing a circuit from grounded battery 50 to conductor54, conducting arm 55, contact 52, conductors 55 and 55 to the groundedcoil of relay 51, energizing said relay. Upon energization of relay 51,the associated contacts 55 are opened, and contacts 55, 55, and 15 areclosed. Since the contacts 55, which are now closed, are connected tothe common conductor 55, the circuit from grounded battery 55, justtraced, is continued to include contacts 55, conducting arm 41 of device43, the 6 contact of the associated bank 45, conductor 11, the "6solenoid 55 of the tens orders, con ductors 51 and 12, contacts 55 toground, energizing said solenoid, and effecting the entry of "6" in thewheel 35 of the tens order, thus causing the said wheel to stand at "8.Also, sincecontacts 15 (now closed) are connected to the commonconductor 55, the circuit from grounded battery 55,1ust referred to, isextended to include the said contacts 15, conducting arm 41 of thedevice 44, contact "1" of the associated bank of contacts 45, conductors13 and 14, the 1" solenoid 55 of the hundreds group, conductors 51 and'12, contacts 55 to ground, energizing said solenoid, and effecting theentry of l in the wheel 35 of the hundreds order, thus causing the saidwheel to stand at 1.

It is obvious that the reading out of these amounts 5 and i out of thetens order and the hundreds respectively of the main accumulator, takesplace simultaneously for the two orders, that is, the tens and thehundreds.

Whenever this reading out from the units storage, for example, into thetens order (of the main accumulator) should move this tens wheel from 9through 0, then a carry-over would be due to go into the hundreds wheelof the main accumulator; but there being no direct carry-over betweenthese two wheels, this carry-over is merely stored-up in the storagesystem for the tens order wheel so that there would be no confusion orloss of this carry-over -in case the hundreds wheel was at that timemoving under the carry-over from the unit storage system.

The next step in the present reading out operation comprises positioningthe conducting arm 50 to engage the contact 53, thus connecting thegrounded battery 55, by means of conductor 54, conducting arm 50, andcontact 55 to the common conductor 15. The grounded coil of relay 15 isconnected directly to 'the said common conductor 15, thereby causing therelay to be energized, to close the associated contacts 11. The saidconductor 15 is also connected to the conducting arm 41 of the storingdevice 45 by conductor 15, thereby permitting current from the groundedbattery 50 to fiow in the following circuit, comprising the 1 contact ofthe bank of contacts 45 of the tens order, which is engaged by therelated conducting arm 41, conductor 14, the 1" solenoid 55 of thehundreds order, conductor 51 and contact 11 to ground, energizing saidsolenoid and effecting the entry of l in the wheel 35sof the hundredsorder, thus causing the said wheel to stand at 2."

It is seen now, upon completion of the tens carry read out operation,that the said accumulator wheels 35 are standing at 2," "8," and 6, torepresent the true total of the items, or data sensed on the individualrecords. Upon restoration of the conducting arm 55 to the normalposition shown in Fig. 4, closure of switches 5| and 55, resetting ofthe conducting arms 41 of the devices 43, H, and 45 to zero, andresetting the accumulator wheels 45 to zero (which operations areassumed to be manually operated for the present description), themachine is conditioned for sensing other groups of records, andcontrolling the accumulating mechanism accordingly to effect entries ofthe data therein, exactly as described hereinabove.

It was mentioned before that provision is made for selectingpredetermined accumulating mechanisms, from a plurality, upon sensingcertain control designations, recorded on the records, and thenefi'ecting entry of the related data on the records into the selectedmechanism or mechanisms. A suitable arrangement for effecting this typeof operation will now be described.

Referring now to Fig. 4, a second accumulating mechanism is showndiagrammatically and designated ACC #2, which is similar to theaccumulating mechanism described 'hereinabove and designated ACC #1 inFig. 4. The same ref,- erence characters, provided with the suffix a,are employed for designating the elements of the mechanism ACC #2,similar to the elements of the mechanism ACC #1.

For the present description, assume that the individual records areprovided with a control designation 2|, in addition to the datadesignations l8 (see Fig. 1). It was pointed out that the said controldesignations control the activation of photocell 28. Assume alsothatswitch 58 is'opened during the operations to be described.

Upon sensing the said designations disposed I on the individual records,it is to be noted that the activation of the photocells 21, upon sensingthe data designations, is not efiective at this time to effectenergization of the related solenoids 58, due to the fact that thecommon conductor 51 is not connected to ground. However, a groundconnection to the said common conductor is made upon energization ofrelay 80, the energization of which is under control of photocell 28.Upon activation of the said photocell 28, the following circuit isestablished: from grounded batterylill to switch 5|,conductor 52,photocell 28, re lay 80, conductor 84, normally closed contacts 8| toground 83, energizing said relay. The contacts 8| and 82 of relay 80 areof the make before brea type. Therefore, it is seen that ground 82 isconnected to contacts 82 before contacts 8| are opened. Upon closure ofcontacts 82, and

connection of ground 88 to conductor 51, it is evident that thesolenoids 55 of the various orders of ACC #1 can now be energized inaccordance with the activated cells 21. A circuit for one order can betraced as follows: grounded battery 58, switch 5|, conductor 52,photocell 21 of the units order,,for example, related solenoid 58,conductor 51, contacts 82 to ground 88, energizing the said solenoid.The adjustment of contacts II and 82 is such that contacts 8| are notopened until the selected solenoid 55 is sufliciently energized torender the associated plunger effective to position the related shaft80.

Now assume that the records which are sensed are provided with controldesignations disposed so that the photocell 28 is activated whenever theindividual records are presented to the sensing station. Relay 80a isthen energized, each time the said control designation is sensed, by thecircuit from grounded battery 50, switch 5|, photocell 29, relay 80a,contacts 8|a to ground "(1. Upon closure of contacts 82a, the saidground 83a is connected to conductor 51a thus permitting the selectedsolenoids 55a of the various orders of ACC #2 to be energized inaccordance with the sensed data.

In the event the sensed records are providedwith a plurality of'saidcontrol designations to activate photocells 28 and 29, simultaneously,both relays 80 and 80a are energized to connect the grounds 88 and 83a,respectively, to the corresponding conductors 51 and 51a, thuscontrolling both ACC 1 and ACC #2 in accordance with the sensed data.

The carry storing devices 43a, 44a, and 45a of ing which is lacking theentry of the successive carry-overs. These carry-overs are stored up ina series of carry-over systems, there being one complete or multi-wheelstorage device for each one of the denominational-order wheels of themain accumulator. That is, since these carryover devices do not receivethe same rapid and differential actuations as is the case with the mainaccumulator, each of said devices comprises a plurality ofdenominational-order wheels wherein supplementary carry-over devices areprovided from the lower order units to the next higher order wheels,there being ample time to effect these carry-overs.

By these mechanisms a rapid and continuous run of entries of valueamounts may be made upon the main accumulator and any number ofsuccessive carry-overs can thus be stored up,

numbering if necessary into the hundreds or thousands, etc., withoutlimitation, such number being limited only by the capacity of thesestorage wheels which register the numbers added thereon as in anyordinary counter.

Then at the end of the continuous run of amount entries, the read-outmechanisms are operated to bring the main accumulator reading to itscorrect final reading. These read-out mechanisms are operated insequence, first the storage device for the unit wheel of the maincounter, then the carry-over storage device for the hundreds wheel ofthe main counter, .and so on to complete in sequence the reading out forall of the storage devices.

If in this process, as above explained, oneof the wheels of the maincounter passes through its position from 9 to 0, its correspondingcarryover system is actuated to add 1 thereon, but

this carry-over is not lost, because it is then' properly entered whenthe next succeeding storage device is read out. ""In this way, by thesequential oper'ation referred to, all of the storage carry-over devicesare read out one after the other, whereby the main accumulator isbrought to a correct final reading of the total of the continuous run ofamount entries.

While there has been shown and described and pointed out the fundamentalnovel features of the invention as applied to a single modification itwill be understood that variousomissions and substitutions and changesin the form and details of the device illustrated and in its operationmay be made by those skilled in the art without departing from thespirit of the invention. It is the intention; therefore, to be limitedonly as indicated by the scope of the following claims.

What is claimed is:

1. In an accounting machine, in combination, an accumulator comprising aplurality of main denominational-order wheels; actuators tor efi'ectingdifferential value movements of said accumulator wheels; denominationalsetting elements for controlling the said actuators; carryover storagedevices for each of said main denominational-order wheels, each of saiddevices comprising a plurality of settable denominational-order storageunits and having supplementary carry-over devices between lower orderstorage units and next higher order units, whereany accumulator wheelduring a continuous run of entries of amounts in the main accumulator;means on each main denominational-order wheel for causing'a unit advanceof the related carry- 4 2. In an accounting machine, in combination, anaccumulator comprising a plurality of main denominational-orderelements; means for e1- fecting-entries in said accumulator;' carry-overstorage devices for each of said main denominational-order elements,each of said devices comprising a plurality of settabledenominational-order storage units and having supplementary carry-overdevices between lower order storage units and next higher order storageunits,

whereby to store up any number or carry-overs by to store up any numberof carry-overs from 1 over storage device when said wheel passes from 9to 0; and read-out mechanism for transferring in sequence, first fromall of the units of the storage device for the lowest order to thewheels of higher order in the main accumulator, then from all o1 theunits of the storage device for the next order to the wheels of higherdenominational order in the main accumulator whereby to bring the mainaccumulator to a correct final reading 01 the total of the saidcontinuous run of amount entries.

from any accumulator wheel during a continuous run of entries in themain accumulator; means on each main denominational-order element forcausing a unit advance or the related carry-over storage'device whensaid element passes from 9 to 0; and read-out mechanism for transferringin sequence, first from all of the units of the storage device for thelowest order to the elements of higher order in the main accumulator,then from all oi. the units of the storage device for the next order tothe elements of higher denominational order in the main accumulatorwhereby to bring the main accumulator to a correct final reading of thetotal of the said continuous run 0! entries.

3. In an accounting machine, the combination set forth in claim 1,wherein the read-out mechanisms comprise a plurality oi electromagneticdevices with circuits connected therewith for differentially actuatingthe corresponding next higher order wheels of the main accumulator. mmE. GOUID.

